I have been a bit passive in my approach to breed these things. When I got our beardie in September the breeder gave me two females and a male and suggested I try and breed them. After letting them sit in a plastic bin with no heat for 6 weeks, I turned a light on them and a month later (last weekend actually) we finally had some babies...LOL. So now I have about 25 little babies running around, and at this rate should have a full fledged colony sometime next year...
As far as humidity is concerned, I watched a youtube video where the guy had taken plastic tupperware, poked holes in the lid and the sides, and put wet paper towels inside. He then placed this under the heat light in the plastic bin and it served as a 'homemade' humidifier. I have done the same with my bin. Not sure it made a difference since I've been kind of half ass about the whole thing, but I thought it was a good idea to get some humidity in there.